列的差异。返回变量顶部重复结果

Question

我有一个返回两列最大差异的查询。让我们说它是这样的：

| result |
    5
    5
    5
    4
    4
    3
    2

我怎样才能让它每次都返回所有顶级结果？ （5,5,5）

我不是在寻找LIMIT 3，因为结果有所不同，有时只有一个顶级数字等。

我现在的查询如下：

SELECT MAX(column1 - column2) as result
FROM table
WHERE othercolumn = somecondition
GROUP by id
ORDER BY results asc

Answer 1

未经测试但可能有效

select *,column1-column2 as result from table where column1 - column2 = 
(SELECT (column1 - column2) as G
FROM table
ORDER BY G DESC limit 1)

Answer 2

SELECT MAX(column1 - column2) as result
FROM table
WHERE othercolumn = somecondition
GROUP by id
HAVING result = 
  (select max(column1 - column2) FROM table WHERE othercolumn = somecondition)
ORDER BY id;